Blowshaft

ABSTRACT

A blow shaft insertable between a spinning nozzle and a spooling device for making synthetic textile fibers of thermoplastic material, in which on a base plate there is vertically arranged a first frame one side of which has provided thereon connecting bolts for detachably receiving thereon second frame means forming part of rectifier means and for also detachably receiving a rear hood, whereas the other side of the first frame means is provided with welded-on portions to which doors forming part of a spinning chamber are hinged.

United States Patent Hagenburg Sept. 2, 1975 [541 BLOWSHAFT 3,551,9491/1971 Leyboume ct a1 425/445 [76] Inventor: Otto Heinrich GrafHagenburg,

T tte k f Strasse 6 8192 Primary ExaminerRobert L. Spicer, Jr.

G i d 2 Germany Attorney, Agent,.0r Firm--Wa1ter Becker [22] Filed: July1, 1974 57 ABSTRACT A blow shaft insertable between a spinning nozzleand a spooling device for making synthetic textile fibers of [52] US.Cl. 425/73; 425/72; 425/445 thermoplastic material in which on a baseplate there [51] Int. Cl D0ld 11/00 is vertical] arran ed a first frameone Side of which 58 Field of Search 264/176 F; 57/157 F; y g

has provided thereon connecting bolts for detachably 425/66, 72, 73,404, 445

receiving thereon second frame means forming part of rectifier means andfor also detachably receiving a [56] References Cned rear hood, whereasthe other side of the first frame UNITED STATES PATENTS means isprovided with welded-on portions to which 2,940,122 6/1960 Collat 425/72doors forming part of a spinning chamber are hinged. 3,067,459 12/1962Brand 3,320,343 5/1967 Buschmann ct al. 425/72 X 5 Claims, 4 DrawingFigures 6 g 5 I I 1:

6 1: Anna: 7

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PATENTED SEP 21975 Prior Ar Fig.1

BLOWSHAFI The present invention relates to a blow shaft formanufacturing synthetic textile fibers and thermoplastic material, saidblow shaft being arranged between a spinning nozzle and a spoolingdevice.

Blow shafts of theabove. mentioned type have th purpose by means of aflow of climatized air transverse to the spinning direction toconsolidate-the textile fibers by cooling and to tighten them bydisplacement out of the spinning plane. In order to align the airflowing uniformly parallel and transverse to the spinning direction, arectifier system is provided which is arranged on a side wall of thespinning chamber.

It is known on a base plate I) to provide a stabile back f(FlG. l whichsimultaneously forms the damming up or accumulating chamber. Thisarrangement results in a central and supporting structural element, theindividual parts of which are firmly and permanently connected to eachother. On said central and supporting structural element, as closurerelative to the spinning chamber, there are the rectifier systems and :1built in while as lateral confinement of the spinning chamber there areconnected for instance doors g. The construction of such blow shafts,however, is extremely expensive because no economic production of partsthereof is possible. The reason for this was the lack of clearlysubdivided construction groups. Above all, with such an arrangement, theelements of the rectifying system and the spinning nozzles wereaccessible only under difficulties and above all not from all sides. Itis, therefore, an object of the present invention to provide in a simpleconstruction a blow shaft of prefabricated elements adapted to bearranged in single structural groups in which the rectifier system caneasily be cleaned and exchanged while the spinning nozzles areaccessible from all sides.

These and other objects and advantages of the invention will appear moreclearly from the following specification in connection with theaccompanying drawing, in which:

FIG. 1 illustrates a side view of a heretofore known blow shaft.

FIG. 1a is a top view of FIG. 1.

FIG. 2 is an exploded side view of a blow shaft according to theinvention.

FIG. 3 shows the blow shaft of FIG. 2 in top view likewise in explodedcondition.

The blow shaft according to the present invention is characterizedprimarily in that on a base plate there is vertically arranged a framewhich on one of its sides has connecting bolts on which the frames forreceiving the rectifier elements and the back hood provided on a frameare adapted to be placed, and on the other side of which is providedwith welded on portions with vertical bores on which the doors formingthe spinning chamber are suspended with hinges and pins. It is expedientthat the frames of the rectifier system and of the back hood have across section which in superimposed condition covers the frame connectedto the base plate while the outer surface of the frames of the rectifierelements are parts of the outer surface of the blow shaft.

The rectifier system may consist of a back-up wall inserted in a frame,and of a fine mesh grate clamped into a further frame. All abovementioned frames are expediently made of square steel pipe.

Referring now to the drawing in detail, on the base plate 1 (FIG. ,2)there are arranged vertical struts 4 which fonn a frame 2 and preferablyconsist of tubular square steel pipe. The vertical struts have theirupper ends interconnected by a transverse latch 5. The vertical struts 4have on oneside thereof connecting bolts 6 with screw thread and on thatside which is located opposite thereto have two welded on portions 7with a vertical bore each. These parts result in the stationaryframework of the blow shaft.

The rectifier system 3 comprises two steel pipe frames 8 and 9 one ofwhich comprises the damming up wall whereas the other has a wire screenfabric which is placed over its free width. These two frames are withcorresponding bores slipped onto the connecting bolts 6. The frames 8and 9 may also comprise other elements for deviating and quieting theelements producing the air flow. Provided in front of the rectifiersystem 3 there is arranged a rear hood 10 which comprises for instance asheet metal planked frame of square shaped steel pipes. This rear hoodforms the back-up chamber. The back-up chamber is like frames 8 and 9with corresponding bores placed upon the connecting bolts 6 and togetherwith frames 8 and 9 is screwed thereon. The spinning chamber located onthe oppositely arranged side of the frame 2 is laterally confined by thetwo doors 11 and 12 which by means of hinges l3 and pins can bepivotally fastened in the bores of the welded on portions 7 on frame 2.The doors are expediently made of aluminum sheet metal having athickness of approximately 5mm and may also be provided with windows 14.The blow shaft thus consists substantially of three structural groups,namely the fixed base framework comprising the base plate and thevertically standing frame 2 onto which on one side there are placed therectifier system and the rear hood and are screwed thereto, and on itsother side there is provided the spinning chamber comprising the doors11 and 12. The assembly can be carried out with a few manual operations.The cleaning of the elements of the rectifier system is easily possibleby withdrawing the rear hood 10 while the frames 8 and 9 can likewise bewithdrawn. By unhinging the doors 1 1 and 12, the spinning nozzlesarranged above the spinning chamber will be accessible from all sides.With heretofore known blow shaft constructions this was possible only bya cumbersome disassembly of the entire construction.

It is, of course, to be understood that the present invention is, by nomeans, limited to the specific showing in the drawing but also comprisesany modifications within the scope of the appended claims.

What I claim is:

1. A blow shaft adapted to be placed between a spinning nozzle and aspooling device for manufacturing synthetic textile fibers fromthermoplastic material, which includes: a base plate, first frame meansvertically arranged on said base plate and connected thereto, connectingbolt means provided on one side of said first frame means, protrusionmeans protruding from and arranged on the other side of said first framemeans and provided with substantially vertical bores, second frame meansforming part of a rectifier system and detachably mounted on said boltmeans, a rear hood including third frame means and being likewisedetachably mounted on said bolt means and being located on the outsideof said second frame means remote from said first frame means, doormeans provided 3 with hinge means, and pin means pivotally and hingedlyconnecting said door means to said protrusion means, said door meansforming part of a spinning chamber.

2. A blow shaft according to claim 1, in which said first and second andthird frame means have a vertical section of substantially the same sizeso that said first frame means and said second frame means and said rearhood cover each other when in mounted condition.

3. A blow shaft according to claim 1, in which said of the outersurfaces of said blow shaft.

1. A blow shaft adapted to be placed between a spinning nozzle and aspooling device for manufacturing synthetic textile fibers fromthermoplastic material, which includes: a base plate, first frame meansvertically arranged on said base plate and connected thereto, connectingbolt means provided on one side of said first frame means, protrusionmeans protruding from and arranged on the other side of said first framemeans and provided with substantially vertical bores, second frame meansforming part of a rectifier system and detachably mounted on said boltmeans, a rear hood including third frame means and being likewisedetachably mounted on said bolt means and being located on the outsideof said second frame means remote from said first frame means, doormeans provided with hinge means, and pin means pivotally and hingedlyconnecting said door means to said protrusion means, said door meansforming part of a spinninG chamber.
 2. A blow shaft according to claim1, in which said first and second and third frame means have a verticalsection of substantially the same size so that said first frame meansand said second frame means and said rear hood cover each other when inmounted condition.
 3. A blow shaft according to claim 1, in which saidsecond frame means includes a first frame with a backing-up wallinserted thereinto and also includes a second frame with a fine meshscreen inserted thereinto.
 4. A blow shaft according to claim 1, inwhich said first and second frame means and said third frame meansinclude steel pipes of square cross section.
 5. A blow shaft accordingto claim 1, in which the outer surfaces of said second frame means forma part of the outer surfaces of said blow shaft.